Dweets awesomed by u/Jerbell

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

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    u(t) is called 60 times per second.
    t: Elapsed time in seconds.
    S: Shorthand for Math.sin.
    C: Shorthand for Math.cos.
    T: Shorthand for Math.tan.
    R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5)
    c: A 1920x1080 canvas.
    x: A 2D context for that canvas.

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Current theme challenge: #Opposites

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doof

remix of d/5072 by u/doof

function u(t) {

with(x)rotate(1/(t||translate(n=960,540))/99),drawImage(c,-957,-537,1914,1074),fillStyle=`hsl(${t*90},50%,50%)`,fillRect(-n,S(t)*n,n+n,t&63)

Jan 1 2018 4:59 AM UTC

}// 140/140

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u/donbright

hell yes. great

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Pjaerr

function u(t) {

c.style.background=R();x.fillStyle=R(...[S,C,T].map(_=>127*(_(t)+1)));a=137.5*frame;r=8*frame**.5;x.fillRect(r*C(a)+960,r*S(a)+540,8,8)

Dec 30 2017 7:50 PM UTC

}// 135/140

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A little bit of Phyllotaxis. http://algorithmicbotany.org/papers/abop/abo…

Show more comments…
u/Pjaerr

btw, changing the angle a from 137.5 to 137.3 or 137.6 produce different, albeit nice, patterns.
u/Bendoman

Second best thing on here by far.
u/dubistdu

WOW
u/trupples

Also.. shouldn't it be 137.5 * pi / 180 ~~ 2.39982772149 as the trigonometric functions take in radians?
u/trupples

137.5 also kind of "isolates" the spirals after a short while while 2.4 does not
u/Pjaerr

Yeah, that'll be it actually. I still thought it looked decent!
u/DiamondDrake

I was just working on a Phyllotaxis dweet, though i was trying to use ellipse that just needs way too many characters
u/@no_identd

Although the point about radians is fully correct, I'd like to point out that the most accurate IEEE single float approximation of this angle in degrees is 137.50777 (which internally becomes 137.5077667236328125)
u/lionleaf

#spiral #flower #plant #botany
u/fujimotos

This is amazingly beautiful.

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jonathan_b

remix of d/4563 by u/jonathan_b

function u(t) {

for(c.width|=s=490,i=0;i<s*9;)for(j=2;j<16;)r=j*4,x.fillStyle=R(i/j,i/r,s/C(i),3/j),x.fillRect(970+s*C(++i)*C(T(t/++j)+j/r*i),s+s*S(i),r,r)

Dec 29 2017 6:05 AM UTC

}// 139/140

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u/joeytwiddle

#colors

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zoulei

remix of d/4341 by u/zoulei

function u(t) {

c.width^=0;for(i=9;i<2e3;i+=1)s=3/(9.1-(t+i/8)%9),x.beginPath(),j=i*4+S(i*4+t+S(t)),x.lineWidth=s*s,x.arc(960,540,s*49,j,j+.6),x.stroke()

Dec 29 2017 2:38 AM UTC

}// 137/140

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Jerbell

function u(t) {

c.width|=0
y=(t,r)=>{for(i=0,m=255;++i<1920;x.fillStyle=R(m*S(t*r),m*C(t*r),m/T(t),2*S(i)))x.fillRect(i,1080*S(++t/r),r,r)}
y(t,9)
y(t/2,5)

Dec 29 2017 2:38 AM UTC

}// 139/140

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Jerbell

remix of d/4334 by u/Jerbell

function u(t) {

k=192;m=255;c.width|=0;for(i=0;i<10;i++)for(j=0;j<6;j++){x.fillStyle=R(m*S(i),m*S(j),m*S(t),j/6-Math.abs(S(i+t)));x.fillRect(k*i,k*j,k,k)}

Dec 28 2017 8:25 PM UTC

}// 138/140

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retera

function u(t) {

c.width=w=1920
v=t+400
for(q=255;q--;){x.fillStyle=R(q,q,q);x.beginPath();x.arc(w/2+C(v-q)*(v+q),540+S(v-q)*(v-q),40,0,6.283,!1);x.fill()}

Dec 28 2017 8:54 AM UTC

}// 138/140

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u/Xen

nice style
u/geb

#background
u/vain

well done!

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Jerbell

function u(t) {

k=192;m=255;if(t>0){c.width|=0;u(-t)}for(i=0;i<10;i++)for(j=0;j<6;j++){x.fillStyle=R(m*S(i),m*S(j),m*S(t),S(t+i+j));x.fillRect(k*i,k*j,k,k)}

Dec 28 2017 8:09 AM UTC

}// 140/140

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Kamyu

function u(t) {

c.width=1920;k=6;a=60;p=2*Math.PI;for(h=p;h>0;h-=0.01){x.globalAlpha=h/p;l=h+t;x.fillRect(960+k*a*C(l)+a*C(k*l),540+k*a*S(l)-a*S(k*l),9,9)}

Dec 28 2017 8:07 AM UTC

}// 139/140

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sigveseb

function u(t) {

c.width=2e3;x.translate(960,540);x.rotate(t/2);for(i=s=99;a=s*s/(s-i-t%s),i--;x.rotate(S(t)/s),x.fillStyle=R(a/9),x.fillRect(b=-a/2,b,a,a));

Jan 8 2016 12:09 AM UTC

}// 140/140

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u/gabrielsroka

c.width=1920;x.translate(960,540);x.rotate(t/2);for(i=s=99;a=s*s/(s-i-t%s),i--;)x.rotate(S(t)/s),x.fillStyle=R(a/9),x.fillRect(b=-a/2,b,a,a)
u/gabrielsroka

c.width=1920; looks better in fullscreen
u/AnnanFay

Congratulations! You've reached the end.
u/dwitter

this is the oldest dweet I could find, gg.
u/13thptr

#tunnel #firstdweet
u/sigveseb

Fits in this month's theme! #cavern

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